okay so i have been installing my motherboard and im short on screw and one washer. So my question is ... is it okay with one mounting bracket not to have a screw in or should i take the mobo out and remove the extra bracket?

I'm not completely sure what bracket you are talking about..... Do you mean the stand-offs that raise the motherboard off of the tray?

If so, as long as the stand-off is in the proper location for a screw you should be ok, but you really should try to track down another screw. The key here is to ensure that all of the stand-offs line up with a screwhole on the motherboard... if they don't you risk shorting out one of the traces/solder points on the bottom of the motherboard.

thats what i mean the standoff. yeah it does line up perfectly. im pretty sure i can find another screw but do i need a washer or is it okay as long as its not touching the pbc or soldering on the motherboard

Unless you're using a verrrryyyyy old motherboard you don't need washers at all. If you look at your motherboard chances are you'll see a metal ring around the screw hole which (to the best of my knowledge) grounds the motherboard to your case through the screw.

It depends which standoff, is it close to another so theboard is still supported? Or is it all out by itself. I would remove the stand off if it is metal, if I though it wouldnt weaken the board too much. A short is bad news. Usually you can find another screw that fits in the slot. Some of your mounting screws for other hardware will fit, do not force a thread that doesn't fit or use a screw that will not tighten.

I would recommend properly securing your entire motherboard to the 9 holes, that's why they are there - so that when you remove a card from a slot or other that the board stays tightly secured to the case and not warp/bend - and no you do not need the washer anymore - just make sure the motherboard is properly secured but do not over tight the screws.